Reliable potassium humate suppliers can be found through major agricultural chemical distributors, online platforms like Alibaba, and directly from manufacturers. Companies such as GlobeCore. (Ukraine), Shandong Chuangxin Humic Acid Technology Co., Ltd. (China), and Humic Growth Solutions (USA) are known for producing high-quality potassium humate products. It’s advisable to verify supplier certifications and customer reviews before making a purchase to ensure product quality.